| 1 | Leaves cuneate with an indistinct petiole; styles 5, not bipartite (section Thelocalyx) |
| 1' | Leaves spathulate, petiole usually distinct and narrow; styles 3, bipartite from the base (section Drosera) |
| 2 | Caulescent herb, stem up to 10 cm long, covered by marcescent leaves; stipules 3-7 mm long, coriaceous and conspicuous; petioles very hairy; peduncles and sepals with glandular hairs and sessile glands, rarely glabrous |
| 2' | Acaulescent herbs, rarely caulescent and the stem very short, 1-3 cm long; stipules 1-5 mm long, membranaceous and almost inconspicuos; petioles glabrous or hairy; peduncles and sepals with long non-glandular hairs, glandular hairs and sessile glands, sometimes glabrous |
| 3 | Leaf blades usually > 2 times as long as wide; petiole 4-40 mm long; inflorescences (2-)10-30 cm long; seeds papillose |
| 3' | Leaf blades < 2 times as long as wide; petiole 3-15 mm long; inflorescences1-7(-10) cm long; seeds never papillose |
| 4 | Petals pink; seeds 0.35-0.4 mm long, with papillae arranged in more or less longitudinal rows |
| 4' | Petals white; seeds 0.25-0.3 mm long, with papillae arranged irregularly |
| 5 | Peduncles and sepals with long non-glandular hairs and smaller glandular hairs; sepals reflexed at anthesis |
| 5' | Peduncles with glandular hairs or sessile glands; sepals erect at anthesis |
| 6 | Blades widely obovate, 4-7 x 2.5-5 mm; sepals free, narrowly ovate and marcescent; fruits after ripening not cup-like |
| 6' | Blades broadly to very widely obovate, 2.5-5 x 2.5-4 mm; sepals joined at base, narrowly ovate and deciduous; fruits after ripening cup-like |
| 7 | Petioles 3 mm long; inflorescences and sepals glabrous, peduncles 1.5-2 cm long, 1-3-flowered |
| 7' | Petioles 5-6 mm long; inflorescences and sepals with sessile glandular hairs, peduncles 3-8 cm long, (1-)3-10-flowered |
